( *9 1 > 
A CATALOGUE of the fiver al Eleftrick 
Bodies mentioned in the foregoing Difcomje. 
N° Names of the feveral Bodies. Weight. Month. Days. 
3 3 
i Fine black Rofin - — • z 
z Stone Pitch and black Rofin z 
3 Fine Rofin and Bees-Wax z 
4 Stone Pitch — — • i 
5 1 Stone Sulphur • — — 3 
6 Shell-lac 10 
7 Fine black Rofin —— — 10 
8 Bees-Wax and Rofin — — 9 
9 Rofin 4, and Gum-lac 1 pari 10 
10 Sulphur — < 18 
11 Stone Pitch 10 
ix Black Rofin Z3 
13 White Rofin —— — 7 
14 Gum-lac — • 1 1 
17 Gum-lac and black Rofin ana 9 
1 6 Gum-lac \parts, Rofin 1 pt. 17 
17 Shell-lac, tine black Rofin ana z 8 
18 A Cylinder of Stone Sulphur 19 
19 A largeCone of StoneSulphur 30 
2,0 A Cake of Sulphur — 1 1 
0 January 31 
z January 31 
1 February 1 
7 February 1 
6 February 4 
o February xo 
4 February 11 
o February 12 
o February iz 
o February 15 
iz February x 6 
o February 2-3 
iz February 15 
14 February 26 
iz February 26 
8 February 28 
4 March 2 
At March 20 
o March 29 
4 April 29 
<y / i?, 
Be pleafed to communicate thefe to the Royal Society , 
to whom I hope they will be no lefs acceptable than 
fome of my former Difcoveries from me, who am, 
S I R, 
Theirs, andyour moft Obedient Servant, 
Stephen Gray, 
